I have recently been called out to a local pool that wants to gfi their pool lights. I have it set up that the large pool is on one cicuit that will draw 11.8amps, a hot tub has its own that circuit that draws 3amps, and some ground lights that draw 6 amps that also have their own circuit. I installed the seimans gfi breakers after tracing out the wiring to make sure the neutrals were all separate. I put each on the own photocell. Everything worked fine for me when I checked it out by taping up the photocell everything worked. The next day I got a call saying that the circuits trip out on the gfi. If everything worked for me on my tests...could my wiring be to blame or should i be looking elsewhere...I think it might be the old wire that has been underwater for so long..my boss doesn't think so...ant ideas...thanks.